Justin Bieber: Secrets Of Wild Parties At L.A. Mansion?

While the Biebs is away, his friends will (allegedly) play! As Justin has been away on tour, a source claims his friends have been taking advantage of his killer pad by throwing crazy parties!

While Justin Bieber is out of town, his friends — including Lil Twist and King Kevi — have reportedly been using his Los Angeles mansion to house some ragers! “The parties are pretty wild,” one partygoer tells RadarOnline.com. “It is like an insane frat party, but with way less dudes and a lot more hot chicks! They go on until about four or five in the morning.”

Justin Bieber: Parties Thrown At His Home While He’s Gone

The source adds that the parties get pretty big, with almost 50 guests, the majority of them girls.

“A couple of them are strippers and the rest are just girls that everyone knows,” the source claims. “All the guys are pretty much hooking up with all the women, they find two or three girls that they like a night.”

Does Justin Give Permission For The Parties?

The source also adds that Justin is apparently aware these crazy house parties are taking place.

“Justin knows about the parties and doesn’t mind – but there’s always a bodyguard to make sure no girls are taking pictures,” the source says. “Everyone who comes in has to sign [a non-disclosure agreement] and leave their cell phone at the door with security.”

The source alleges that Justin even joins in on the ragers when he’s in town!

“It just depends on what kind of mood Justin is in on the night, but it’s definitely ramped down a notch or two,” the source explains.

“You gotta remember, Justin’s 19 and what are other kids his age doing?” the source says. “He’s doing the same thing as any teen – it’s just that he has more money to do it with which means a much larger scale.”